I had this idea at Swancon last year... and it's finally come to fruition!
I chose the 4th doctor, as he's from the disco era (and you can just see him dancing dorkily, can't you?). Daleks aren't great dancers, but they can do the robot.
4th doctor detail shot is here: [link]
Time: 6 hours
Tools: Photoshop CS4, Wacom Intuos tablet